Thread clearer



Dec. 17, 1929. s. HYSLOP THREAD CLEARER Filed Feb. 2'7, 1926 w Fad S 1822; 21:3202: amaze yasZo 5 Patented Dec. 17, 1929 warren STATES SAMUEL HYSLOP, OF NEWTON, MASSACHUSETTS THREAD Application filed February This invention relates to thread or yarn clearers for use in connection with winding machines and the like for the purpose of breaking a thread containing a knot, bunch or slub or similar imperfection of any kind, and is an improvement on the construction shown in my United States Letters Patent No. 1,499,929 of July 1, 1924.

In the drawings of the embodiment of my invention illustrated and described herein,

Fig. 1 is a side elevation;

Fig. 2, a plan;

Fig. 3, a similar view with the parts in abnormal or thread breaking position; and

Fig. 4, a Vertical section on the line 44:, Fig. 2, from below.

Referring first to Figs. 1, 2, 3, my novel structure comprises a base 1, having any suitable means as a split arm or block 2 with a locking screw 3 by use of which the clearer may be secured to a suitable support.

lhe base 1 may be provided with any convenient thread rest and guide, as herein a post 4. at each corner of its upper face, and, between the pair of posts at one end and the pair at the opposite end extend two round bars or thread supports 5 which are of such height that the thread 6 will rest on them and not on the bottom of the thread breaking member presently to be described, in order to avoid chafing the thread.

On the base 1, Figs. 1, 2, 3, may be p0si tioned a suitable guide or guides as two upright posts 7 for the thread. At either end of the base 1 is loosely pivoted by screws 77 an arm 8, 9, raised slightly from the base, the arm 9 overlying the arm 8, the holes 777 in the arms 8, 9, being larger than the screws 77. The arm 8 carries a post 10 with a vertical slot 11, while the arm 9 carries a post or block 12 bored to receive the post 10 and with a slot 13therein registering normally with the slot 11, these slots being of a size to determine the coarseness of the thread that can be used. The block 12 is also provided on its front face 14; with two adjustable plates 15, 15', which may be moved laterally relative to each other by loosening the screws 16, Fig. 3, to provide a slot 17 of desired width to ad- :nit' readily the thread intended to be used CLEARER 27, 1926. Serial No. 91,158.

and to resist the passage of thread too large in size or containing imperfections which it is desired to remove.

Ordinarily the parts are positioned as in Fig. 2, with the thread 6 passing readily therethrough.

lVhen, however, a knot, snarl or slub18 approaches, Fig. 3, and strikes the plates 15, they prevent its passage and the pull of the machine on the thread will move the two arms 8, 9, and their post 10 .and block 12 to the position shown in Fig. 8, the thread will be flattened and gripped tightly between the contacting faces of the post 10 and block 12 and the tension on the thread will break it, usually at the point where the thread emerges from the slot 13.

After the imperfection has been removed and the thread tied, the post and block will, by gravity, return to their normal positions and the thread will run freely as before.

This device is much more compact in its constructionthan the device of my former application, has fewer parts, is less expensive to make and more certain in action, inasmuch as the arms, being oppositely pivoted, drop more readily forward than they do in the former construction.

My invention is not limited to the particular embodiment shown and described herein.

Claims I 1. A thread clearer comprising a base, an arm with a slotted post pivotally mounted at one side thereof, an arm with a slotted post receiving block mounted on the opposite side edge, the slots normally in registering relation and constructed and arranged to move out of registering relation and to clamp the thread when engaged by a knot or the like on the thread.

2. A thread clearer con'iprising a base, a plurality of swinging arms on the base on opposite sides of the line of travel of the thread, one arm having a block and the other arm having a post with slots therein and normally in registering relation, the post turning in said block when the latter is engaged by an imperfect thread, to change the relation of the slots and to clamp and break the thread.

3. A thread clearer comprising a base, a

post and a block thereabout on the base slotted to provide a path for the thread and pivoted at opposite sides of the thread path therethrough, said post and block constructed and arranged to turn relatively to each other across the path-of thethread to close the slot and clamp the thread on engagement with the block of an imperfection on the thread.

l. A thread clearer comprising the base 1 having the oppositely swii'iging arms 8, 9'

with the post 10 and the block 12, movable on the base and having concentric arm-engaging relation to each other with slots therethrough normally occupying a continuous plane, adjustable plates 15 edge to edge on the block with the space between them normally in the plane of the slots t hroug'l-i post and block, the post and blockconstructed and arranged to swing under the pull of the thread thereagainst to break the continuity oi the slot therethrou'ghand to break the thread.

5; A thread clearer comprising a base, an

, arm' with a post pivoted at one side of the base and normally in predetermined relation angularly to the path of the thread, a member pivoted to the opposite side of the base",

said member and post bein slotted normally in a plane common to their common pivotal axis and to the thread to provide a channel therefor, and adapted to assume planes uncommon to each other and to any plane of the threadto clamp the thread When engaged by an enlargement thereof.

6. A thread clearer comprising a base, a plurality of relatively overhanging pivoted members thereon with aslot for the thread in the overhanging portions and said members constructed and arranged, when engaged by obstruction on the thread, to turn in opposite directions, close the thread slots and clamp the thread.

In testimony whereof, I have signed my nameto this specification.

SAMUEL HYSLOP, 

